Improvement in grindstones



weitet tatet @anni @Wire THOMAS LORING, OF BLACKWOODTOWN, NEW JERSEY.

Letters Patent No. 97,098, dated November 23,f`1 ,869.

IMPROVEMENT IN GRINDSTONES.

The Schedule referred to these Letters Patent and making part o! thesame.

purchaser, without diiiculty.

rIhe improvements consist in the construction of the tiame crease,surrounding and enclosing the driving-\vheel, and the pinion on thearbor or shaft of the stone, and the manner in which the stone issecured to such arbor, and in the arrangement oi' the different partsrelatively to each other, as hereinafterdescribed.

To enable those skilled in the art to make and use my invention, I will"proceed to describe its construction and operation.

' In the annexed drawings- Figure 1 represents a front elevation of thedevice, showing it attached to the ledge of' a table.

Figure 2 represents a central vertical section thereof.

A is the front part of the case, and B, its back, the lower end ofwhiciLis prolonged, and formed into the `)aws or brackets a a, by whichto secure it to a ledge or table, C, byA means of the thumb-screw b.

D is the driving-wheel, gearing vinto thepinion E, to the shaft or'arbor of which the grindstone F is sccured, as shown in fig. 2. A

A dovetailed hub or bushing, d, being cemented accurately in the centreor eye of the stone, and fitting closely upon the tapering arbor, andheld by the washer and screw c, permits thc ready removal ofthe stonefor packing, and its accurate replacement and readjustment, whenreceived and put up by the pur-- chaser.

Several sizes of stoncs,each having the same sizeof bushing, are adaptedto each number or size of the driving-mechanism, and its frame' or case.

For facility and safety in transportation, the stone and crank are bothdetached, when prepared for packing, to avoid any danger of breakage.

What I claim as new, and desire to secure by Letters Patent, is-

The grindstone F, with hub or bushing d, arborand pinion E,driving-wheel D, and the case A B, with jaws a, a, all constructed andarranged as described.

THOS. LORING.

`Witnessesz l EDWARD WILLIAMS, B. Enw. J. EILs.

